Related Experiment Video
Updated: May 26, 2026
12:33
Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
Published on: February 4, 2013
Self assembly of Janus ellipsoids
1Department of Physics, Lehigh University, Bethlehem, Pennsylvania 18015, United States. yal209@lehigh.edu
Langmuir : the ACS Journal of Surfaces and Colloids
|December 17, 2011
Summary
We introduce Janus ellipsoids, particles with distinct surface properties. Aspect ratio controls self-assembly, offering a new method for designing aggregate size and structure.
Area of Science:
- Soft Matter Physics
- Materials Science
Background:
- Janus particles, with two distinct surface properties, are crucial for self-assembly.
- Ellipsoidal shapes offer unique self-assembly behaviors compared to spheres.
Purpose of the Study:
- To develop a primitive model for Janus ellipsoids.
- To investigate the influence of aspect ratio on self-assembly and aggregation.
- To compare the behavior of Janus ellipsoids with Janus spheres.
Main Methods:
- Monte Carlo simulations were employed to model particle interactions.
- The study focused on varying the aspect ratio of the ellipsoidal core.
Main Results:
- The aspect ratio significantly impacts the morphology and aggregation processes of Janus ellipsoids.
- Aggregate size and structure can be precisely controlled by adjusting the aspect ratio.
- Differences in self-assembly were observed compared to Janus spheres.
Conclusions:
- The developed Janus ellipsoid model provides a controllable platform for self-assembly.
- Aspect ratio is a key parameter for tuning the properties of self-assembled structures.
- This research offers insights into designing complex soft matter architectures.
Related Concept Videos
01:28Assembly of the Lipid Bilayer in the ER
Biological membranes are more than just a barrier separating cell cytoplasm from the outside environment. They are highly dynamic and help maintain the integrity and physiological stability of the cells as well as membrane-bound organelles. Membranes also play vital roles in cell-to-cell and intracellular communication.
A large chunk of any biological membrane is composed of phospholipids. These lipids have a heterogeneous distribution across different subcellular organelles and even between...
A large chunk of any biological membrane is composed of phospholipids. These lipids have a heterogeneous distribution across different subcellular organelles and even between...
01:31Mechanism of Lamellipodia Formation
Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
01:16Eccentric Axial Loading in a Plane of Symmetry
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
01:32Assembly of Complex Microtubule Structures
Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
01:21Plastic Deformations of Members with a Single Plane of Symmetry
When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
01:18Assembly of Cytoskeletal Filaments
Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...